<template>
  <div>
     <!-- 面包屑导航区域 -->
   <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>添加商品</el-breadcrumb-item>
</el-breadcrumb>
  <!-- 卡片视图区域 -->
  <el-card>
    <!-- 提示区域 -->
    <el-alert
      title="添加商品信息"
      type="info"
      center
      show-icon
      :closable="false">
    </el-alert>
    <!-- 步骤条 -->
    <el-steps
    :space="400"
    :active="activeIndex-0"
    finish-status="success"
    align-center>
  <el-step title="基本信息"></el-step>
  <el-step title="商品参数"></el-step>
  <el-step title="商品属性"></el-step>
  <el-step title="商品图片"></el-step>
  <el-step title="商品内容"></el-step>
  <el-step title="完成"></el-step>
    </el-steps>

    <!-- tabs栏区域 -->
    <el-form
    label-position="top"
    :model="addForm"
    :rules="addFormRules"
    ref="addFormRef"
     label-width="100px">
    <el-tabs
    v-model="activeIndex"
    :before-leave="beforeTabLeave"
    @tab-click="tabClicked"
    :tab-position="'left'">
      <el-tab-pane label="基本信息" name="0">
          <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="addForm.goods_name"></el-input>
          </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
          <el-input type="number" v-model="addForm.goods_price"></el-input>
          </el-form-item>
          <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="addForm.goods_weight"></el-input>
          </el-form-item>
          <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="addForm.goods_number"></el-input>
          </el-form-item>
          <el-form-item label="商品分类" prop="goods_cat">
             <el-cascader
              v-model="addForm.goods_cat"
              :options="cateList"
              :props="{ expandTrigger: 'hover', ...cateProps }"
              @change="handleChange"></el-cascader>
          </el-form-item>
      </el-tab-pane>
      <!-- 渲染表单item项 -->
      <el-tab-pane label="商品参数" name="1">
        <el-form-item v-for="item in manyTableData" :label="item.attr_name" :key="item.attr_id">
        <!-- 复选框 -->
            <el-checkbox-group v-model="item.attr_vals">
            <el-checkbox border :label="cd" v-for="(cd,i) in  item.attr_vals" :key="i"></el-checkbox>
            </el-checkbox-group>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品属性" name="2">
        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
          <el-input v-model="item.attr_vals"></el-input>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品图片" name="3">
        <!-- action表示图片上传的地址 -->
        <el-upload
  :action="uploadURL"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  :headers="headerObj"
  :on-success="handlerSuccess"
  list-type="picture">
  <el-button size="small" type="primary">点击上传</el-button>
  <div slot="tip">只能上传jpg/png文件，且不超过500kb</div>
          </el-upload>
      </el-tab-pane>
      <el-tab-pane label="商品内容" name="4">
        <!-- 文本域编辑器 -->
        <quill-editor v-model="addForm.goods_introduce"></quill-editor>
        <!-- 添加商品按钮 -->
        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
      </el-tab-pane>
    </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览 -->
    <el-dialog
  title="提示"
  :visible.sync="preViewVisible"
  width="50%">
 <img :src="preViewPath" class="previewTmg">
</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  name: 'A-dd',
  data () {
    return {
      /* 控制步骤条的进度 */
      activeIndex: '0',
      /* 添加商品的表单数据对象 */
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        /* 商品分类 */
        goods_cat: [],
        /* 文件上传路径 */
        pics: [],
        /* 商品详情描述 */
        goods_introduce: '',
        attrs: []

      },
      /* 添加商品表单订单校验规则 */
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ]
      },
      /* 商品分类列表 */
      cateList: [],
      /* 级联控件配置对象 */
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      /* 获取动态参数数据 */
      manyTableData: [],
      /* 获取静态属性 */
      onlyTableData: [],
      /* 上传的url地址 */
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      /* 请求头 */
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      /* 预览图片的url地址 */
      preViewPath: '',
      /* 显示图片预览对话框 */
      preViewVisible: false
    }
  },
  methods: {
    /* 获取商品分类列表 */
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) return this.$message.error('获取商品分类数据失败')
      this.cateList = res.data
      // console.log(this.cateList)
    },
    /* 级联控件的改变时间 */
    handleChange () {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      // this.addForm.goods_cat = this.addForm.goods_cat.join(',')
      // console.log(this.addForm.goods_cat)
    },
    /* 是否阻止标签页的切换 */
    beforeTabLeave (activName, oldActibName) {
      // console.log(activName, oldActibName)
      if (oldActibName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    /* tabs激活的点击事件 */
    async tabClicked () {
      if (this.activeIndex === '1') {
        // console.log(this.activeIndex)
        /* 发起获取动态参数请求 */
        const res = await this.getParams('many')
        console.log(res, 111)
        res.data.forEach(item => {
          if (item.attr_vals.length === 0) {
            item.attr_vals = []
          } else {
            item.attr_vals = item.attr_vals.split(' ')
          }
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const res = await this.getParams('only')
        console.log(res.data)
        this.onlyTableData = res.data
      }
    },
    /* 获取动态参数或者静态属性 */
    async getParams (param) {
      const { data: res } = await this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`, { params: { sel: param } })
      if (res.meta.status !== 200) return this.$message.error('查询参数失败')
      // console.log(res.data)
      return res
    },
    /* 处理图片预览效果 */
    handlePreview (file) {
      console.log(file)
      this.preViewPath = file.response.data.url
      this.preViewVisible = true
    },
    /* 取消上传文件 */
    handleRemove (file) {
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(item => item.pic === filePath)
      this.addForm.pics.splice(index, 1)
    },
    /* 监听图片上传成功的事件 */
    handlerSuccess (response) {
      // console.log(response)
      // if (response.meta.status !== 200) return this.$message.error('图片上传失败')
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
    },
    /* 添加商品 */
    add () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写必要的表单项')
        /* lodash  cloneDeep() 深拷贝 */
        const from = _.cloneDeep(this.addForm)
        from.goods_cat = from.goods_cat.join('.,')
        /* 处理动态参数 */
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals.join(',')
          }
          this.addForm.attrs.push(newInfo)
        })
        /* 处理静态属性 */
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_vals: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        from.attrs = this.addForm.attrs
        console.log(from)
        /* 商品必须唯一 */
        const { data: res } = await this.$http.post('goods', from)
        if (res.meta.status !== 201) return this.$message.error(res.meta.msg)
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  },
  /* 监听属性 */
  watch: {

  },
  created () {
    this.getCateList()
  }
}
</script>

<style lang="less" scoped>
.el-checkbox{
  margin: 0 5px 0 0 !important;
}
.previewTmg {
  width: 100%;
}
</style>
